Quote verification

This proves the quote below is recorded by Citatio exactly as displayed and has not been altered since it was committed and anchored. It documents Citatio's crawl observation; it does not imply endorsement by the source platform. The quote links to the original review.

“after the latest update this app doesn't open in my tab”
Google Play · 1/5 · 2026-07-15

Checks (re-run on this request)

✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
✓ Public transparency log — Sigstore Rekor log index 3240231023

Proof data

Record hash (SHA-256): 1c4a3b296fede681b268ca7b6ba643c3c99a45e90fe559762d8f5e83fd50eb58
Signature (Ed25519, base64): 8Z5vsyw/Pggutou9gGdmutdqZd7ZIY9fg8HDwBAj40a9+G6AAbcL2+fLWr75Rqk3VNsivKJTmYN53IaYj+GvBA==
Merkle root: 888a38c73939ec95e6f226dbfb3637325026fcafc5a795aa4e227b811d6b2c84
Merkle path: ["1c436df73c01d0b6f3416651e49c440bc40a340def6fe492fa6caeb0a1afc9d9","7f06cbf4402ec5b2438154ad54ada2f84acf915f0fce36939e54aa790922bdf0","4aa4e24ce670feb6894cd7822f5b63002c89bc7a7578acaa87de71eefcd489fe","a030cbac28c6fcb996f0233fcf727672015bae8cff69d1f4dc1e15f45090904f","c0c6151f9406130fc4a89699555eab11690a2b07784a015646e3ae7703c37998","7be6a0d0f71f1c96841849f3dc6d14f5a6a1eeb033a3e168c9a54eb60a512e75","8e35f977a14b7eb21f7babe6c6fe8ae1b6c1e34c7e70213da8fd3a84b8232ad0","3f42f3dbf9dd5f51b01e82c1f7c2f3f511ae8cad8e6afb513632901bfc20fb73","431d566b946fb028cff5abe69e490f700c4d59a5d58af9640ac49a02346e4885","a5fbf0c21b8acc6c3c93b6bd5ee7017305f498f525f0d5c731cdd805e90d8c42","36593ff6981142345d894360aba2045a8b70ebe4ed0dd9f3ba3c7292169f7244","062cbbfbeb4fd46f2079783d29fb5f6cef5c48e70dbb9c2980860cd1d92ebf74","410ad2e8ec6f218bef120c1cded3462a092f61baab59fee462fd9704d436d66b","f46648ad2fd9f2769b9fc0ba1c434d2040de67cbd8b7a61df7b7575cd5a9206a"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3240231023 · entry 108e9186e8c5677ac0ab…
Expected log hash: bc440cd3136178aee800fe49b9cf2e319542a645c9abbb8553c6ae1e354ce201 The log entry's spec.data.hash.value must equal this value: the SHA-256 of the Merkle root string above. Recompute it yourself from the root to confirm.
Canonical record: {"dataset_version":"v1791860805798","kind":"published-quote","locale":"en","page":"brand:xodo","quote":"after the latest update this app doesn't open in my tab","rating":1,"review_date":"2026-07-15","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (888a38c73939…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
Locally, without any Citatio infrastructure: SHA-256 the canonical record (must equal the record hash), verify the Ed25519 signature against the public key, and fold the hash through the Merkle path (sorted-pair SHA-256) to reach the anchored root.